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Evidence that olfactory sensitivities to calcium and sodium are mediated by different mechanisms in the goldfish Carassius auratus

2007Journal article Restricted
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dc.contributor.authorHubbard, Peter
dc.contributor.authorCanario, Adelino V. M.
dc.date.accessioned2014-05-12T12:08:50Z
dc.date.available2014-05-12T12:08:50Z
dc.date.issued2007
dc.date.updated2014-05-08T11:45:14Z
dc.description.abstractThe current study investigated whether the olfactory sensitivity to Ca2+ and Na+ is mediated by the same mechanism in the goldfish, a freshwater teleost. The olfactory responses, as assessed by recording the electro-encephalogram (EEG) from the olfactory bulb, to changes in external [Ca2+] and to [Na+] were recorded in the absence and presence of increasing concentrations of the other ion. Low concentrations of Na+ (0–1.0 mM) had no significant effects on the olfactory response to changes in [Ca2+] in terms of EC50, Imax or Hill co-efficient (n = 8). A relatively high concentration of Na+ (10 mM) significantly reduced the Imax and increased the EC50. One hundred millimolars Na+reduced the olfactory response to Ca2+ to undetectable levels. Conversely, low concentrations of Ca2+ (0.1 and 1.0 mM) significantly attenuated the olfactory response to changes in environmental [Na+], reducing the amplitude of response and increasing the threshold of detection (n = 7). However, a high concentration of Ca2+ (10 mM) failed to attenuate the olfactory response to Na+ completely. Taken together, these results suggest that, at normal environmental concentrations of these ions, Ca2+ and Na+ are detected by distinct and separate cellular mechanisms. However, there seems to be a degree of overlap between the two mechanisms. The exact mechanisms involved, and their biological roles, remain to be established.por
dc.identifier.citationHubbard, Peter C.; Canário, Adelino V.M. Evidence that olfactory sensitivities to calcium and sodium are mediated by different mechanisms in the goldfish Carassius auratus, Neuroscience Letters, 414, 1, 90-93, 2007.por
dc.identifier.doihttp://dx.doi.org/10.1016/j.neulet.2006.12.007
dc.identifier.issn0304-3940
dc.identifier.otherAUT: ACA00258;
dc.identifier.urihttp://hdl.handle.net/10400.1/3865
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.subjectOlfactionpor
dc.subjectElectro-encephalogrampor
dc.subjectGoldfishpor
dc.subjectCalciumpor
dc.subjectSodiumpor
dc.titleEvidence that olfactory sensitivities to calcium and sodium are mediated by different mechanisms in the goldfish Carassius auratuspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage93por
oaire.citation.issue1por
oaire.citation.startPage90por
oaire.citation.titleNeuroscience Letterspor
oaire.citation.volume414por
person.familyNameHubbard
person.familyNameCanario
person.givenNamePeter
person.givenNameAdelino
person.identifier143624
person.identifier.ciencia-id951F-BA4B-A21F
person.identifier.ciencia-id1F1E-D3B3-F804
person.identifier.orcid0000-0002-3007-4647
person.identifier.orcid0000-0002-6244-6468
person.identifier.ridB-2823-2008
person.identifier.ridC-7942-2009
person.identifier.scopus-author-id7005928467
person.identifier.scopus-author-id56568523700
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationf599b3ac-806b-4f65-9eb6-f70e68bcb142
relation.isAuthorOfPublication5f6e51ee-9113-469e-8b9e-f30f2d452521
relation.isAuthorOfPublication.latestForDiscovery5f6e51ee-9113-469e-8b9e-f30f2d452521

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